基于DMSP/OLS夜间灯光数据的黄土高原地区城镇化发展研究
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摘要
在时间和空间上,对黄土高原地区人口和城镇化发展情况做出定量评估,考虑到DMSP-OLS夜间灯光与社会经济指标的相关性,对DMSP-OLS夜间灯光数据校正处理后,提取黄土高原地区数据,与该地区人口和城镇化率进行比较,结果表明,黄土高原地区人口数量变化在空间上和DMSP-OLS夜间灯光有相关性,同时在选取的该地区23个典型研究县域上,城镇化率和DMSP-OLS夜间灯光呈高度线性相关,因此,DMSP-OLS夜间灯光数据作为表征该地区人口和城镇化发展情况的综合指数是合理、可行的。
In order to evaluate the population and urbanization development on both temporally and spatially quantitatively in the Loess Plateau area, the data of DMSP-OLS nighttime light was corrected and extracted, considering the correlation between DMSP-OLS nighttime light and socio-economic indicators, and the data was used to compare with the population and urbanization rate data. The results showed that the change of population in the Loess Plateau was correlated spatially with the DMSP-OLS nighttime light. At the same time, the urbanization rate and nighttime light of DMSP-OLS were highly linear correlated in 23 typical study counties. Therefore, the DMSP-OLS nighttime light data could be used to characterize the population and the development of urbanization in this region. It was reasonable and feasible to regard DMSP-OLS data as a synthetic index to represent the population and urbanization development in the Loess Plateau area.
In order to evaluate the population and urbanization development on both temporally and spatially quantitatively in the Loess Plateau area, the data of DMSP-OLS nighttime light was corrected and extracted, considering the correlation between DMSP-OLS nighttime light and socio-economic indicators, and the data was used to compare with the population and urbanization rate data. The results showed that the change of population in the Loess Plateau was correlated spatially with the DMSP-OLS nighttime light. At the same time, the urbanization rate and nighttime light of DMSP-OLS were highly linear correlated in 23 typical study counties. Therefore, the DMSP-OLS nighttime light data could be used to characterize the population and the development of urbanization in this region. It was reasonable and feasible to regard DMSP-OLS data as a synthetic index to represent the population and urbanization development in the Loess Plateau area.
引文
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[2] ZHOU H J,VAN ROMPAEY A,WANG J A.Detecting the impact of the “Grain for Green” program on the mean annual vegetation cover in the Shaanxi province,China using SPOT-VGT NDVI data[J].Land use policy,2009,26(4):954-960.
[3] SUN W Y,SONG X Y,MU X M,et al.Spatiotemporal vegetation cover variations associated with climate change and ecological restoration in the Loess Plateau[J].Agricultural & forest meteorology,2015,209-210(1):87-99.
[4] 赵安周,刘宪锋,朱秀芳,等.2000～2014年黄土高原植被覆盖时空变化特征及其归因[J].中国环境科学,2016,36(5):1568-1578.
[5] REYNOLDS J F,STAFFORD-SMITH D M,LAMBIN E F,et al.Global desertification:Building a science for dryland development[J].Science,2007,316(5826):847-851.
[6] VITOUSEK P M,MOONEY H A,LUBCHENCO J,et al.Human domination of Earth’s ecosystems[J].Science,1997,277(5325):494-499.
[7] 李德仁,余涵若,李熙.基于夜光遥感影像的“一带一路”沿线国家城市发展时空格局分析[J].武汉大学学报(信息科学版),2017,42(6):711-720.
[8] GAO B,HUANG Q X,HE C Y,et al.Dynamics of urbanization levels in China from 1992 to 2012:Perspective from DMSP/OLS nighttime light data[J].Remote sensing,2015,7(2):1721-1735.
[9] 倪金星,杨剑,徐冬冬,等.基于DMSP/OLS夜间灯光数据的中国经济空间格局[J].华中师范大学学报(自然科学版),2016,50(6):930-936.
[10] ELVIDGE C D,BAUGH K E,DIETZ J B,et al.Radiance calibration of DMSP-OLS low-light imaging data of human settlements[J].Remote sensing & environment,1999,68(1):77-88.
[11] 郝蕊芳,于德永,刘宇鹏,等.DMSP/OLS灯光数据在城市化监测中的应用[J].北京师范大学学报(自然科学版),2014,50(4):407-413.
[12] ELVIDGE C D,ZISKIN D,BAUGH K E,et al.A fifteen year record of global natural gas flaring derived from satellite data[J].Energies,2009,2(3):595-622.
[13] LI X C,ZHOU Y Y.A stepwise calibration of global DMSP/OLS stable nighttime light data(1992-2013)[J].Remote sensing,2017,9(6):1-14.